.login-container {
    height: calc(100% - 50px);
    /* 设置弹性布局，居中显示页面效果 */
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-dialog {
    width:400px;
    height:400px;
    background-color: rgb(255,255,255,0.8);
    /* 这个就是设计我们的圆角，让这个边缘不要过于锋利 */
    border-radius: 10px;
}

.login-dialog h3{
    text-align: center;
    padding: 50px 0;
}

.login-dialog .row{
    width:100%;
    height: 50px;
    display:flex;
    align-items: center;
    justify-content: center;;
}

.login-dialog .row span{
    width:100px;
    font-weight: 700;
}

#username,#password{
    width:200px;
    height:40px;
    font-size: 20px;
    line-height: 40px;
    padding-left: 10px;
    border: none;
    outline: none;
    border-radius: 10px;
}


#submit{
    width:300px;
    height:50px;
    background-color:rgb(0,128,0);
    color:white;
    border:none;
    outline: none;
    border-radius: 10px;
    margin-top: 20px;
}

#submit:active{
    background-color: #666;
}